Bond alternation in phosphonitrilic compounds

✍ Scribed by Kim F. Ferris; S.M. Risser

• Book ID: 103025436
• Publisher: Elsevier Science
• Year: 1990
• Tongue: English
• Weight: 406 KB
• Volume: 174
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(90)85355-g

✦ Synopsis

The molecular structures of linear phosphonitrilic compounds demonstrate a dependence on the number of repeat units and on ligand elcctronegativity. Recent structural measurements of short length phosphonitrilic molecules have indicated the presence of bond alternation, in contrast to previous X-ray studies of the polymer itself. Ab initio electronic structure calculations have been performed on a series of short phosphonitrilic compounds H,P( NPHZ).NH, n = 1-4, which show that bond alternation does exist for the small chain compounds. The behavior of the alternation as the number of repeat units is increased suggests that alternation continues into the infinite limit.